This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug rtl-optimization/34012] [4.3 Regression] Pessimization caused by fwprop
- From: "bonzini at gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Nov 2007 11:03:06 -0000
- Subject: [Bug rtl-optimization/34012] [4.3 Regression] Pessimization caused by fwprop
- References: <bug-34012-87@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from bonzini at gnu dot org 2007-11-07 11:03 -------
fwprop should check costs just like combine does. Unfortunately the cost do
need a little bit of tweaking even if one implements the idea.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34012